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Electric motor ▲ AC/DC 1

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Uploaded by on Mar 29, 2008

(: 00130 = days since my first newman motor :)

Seeing is learning.

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Uploader Comments (kmarinas86)

  • you shoud get a better drive shaftfor youre moterto in creas inficantcey, u caqn buy a shaft at hone depot , are u doing this experement in your garadge?

  • I have a copper shaft now, which I got from Lowe's.

    I'm not doing this in my garage. Instead I'm doing this behind my bed where I sleep.

  • You have no AC, dude... did you not know that pulsed DC will show on an AC ammeter? And did you not know that short pulse DC will barely read on the DC ammeter?

    Do this: measure the time this "motor" will run on fresh batteries, then then measure the time the same amount of battery power will run a conventional motor doing the same work.

  • Of course pulsed DC will show on the AC ammeter. The multimeter here is *supposed* to be a true RMS multimeter meaning it can determine the voltages and currents of waveforms that not sinusoidal. Actually, that is what I intended on having. Sure, this is obviously not sinusoidal AC. This video is old and I have the motor doing much more work than in this video. See my video response to this with 6:34. The motor runs for two days on 40 volts of 2.5 amp hour (avg) AA batteries, which is 2 watts.

  • I have also found that spinning the magnet by hand produces hardly any power in the coils at all. So I am now sure that the figures on the "AC setting" represent the pulsed dc voltages and currents. Time to move on with my new videos...

  • do you think if a person were to use 10 pounds of rare earth magnets spinning would there be enough torque to belt drive a car altinator?

  • Yes.

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  • You can get oscilloscopes like I was talking about above, for less than a full tank of gas today, in most cases. Check eBay or Amazon or various used equipment sources.

  • Ok we will, but where do we get those scopes? They are not free! They cost much of money!

  • If you really want to show what's going on in your circuit, put a low-ohm 1% resistor in the current path, and connect a triggered oscilloscope across the resistor. If the o'scope is reasonably fast, you will be able to see peaks, rise time, fall time, pulse duration, etc. In other words, you'll see everything (in the current rhelm) that you DON'T see using meters (digital OR analog)!

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